I have a bunch of these ST250LT007 Seagate drives (the same Momentus line of drives, but with no encyption) and they work just fine. However, 4K advanced format drives are not supported in FOG yet. You’d have to use FOG .33 (beta still) to image those drives. That is what I am using now and it is working. The beta is not “feature complete” yet, but 4K drive imaging works.
I’d recommend downloading the beta release to a spare system and doing a few image tests. You could report your success/failures to this forum post:
[url]http://fogproject.org/forum/threads/bugs-in-fog-0-33.631/page-4#post-3691[/url]
If you need help getting the latest beta release down, just let me know.